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Re: Dsolve ODE
*To*: mathgroup at smc.vnet.net
*Subject*: [mg89073] Re: Dsolve ODE
*From*: Steven Siew <stevensiew2 at gmail.com>
*Date*: Sun, 25 May 2008 03:20:55 -0400 (EDT)
*References*: <g18hoc$kft$1@smc.vnet.net>
On May 24, 5:57 pm, sokol <mirek.h... at gmail.com> wrote:
> Hello, I've tried to solve 2nd order ODE with Dsolve but failed.
>
> In[1]:
> DSolve[{y''[x] + Cot[x]*y'[x] + Sin[x]*y[x] == 0,
> y[\[Pi]/2] == \[Alpha], y[(7*\[Pi])/8] == \[Beta]}, y[x], x]
>
> out[1]:
> DSolve[{y''[x] + Cot[x]*y'[x] + Sin[x]*y[x] == 0,
> y[\[Pi]/2] == \[Alpha], y[(7*\[Pi])/8] == \[Beta]}, y[x], x]
>
> Any hint? Thanks.
I believe that your initial conditions are insufficient.
I think you need
y'[x1]==something
y[x2]==something else
for your initial conditions
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